The analyzing power in 28 GeV/c proton-proton elastic scattering was measured at P/sub perpendicular to//sup 2/ = 5.95 and 6.56 (GEV/c)/sup 2/ y/sub g/ a polarized proton target and an unpolarized proton beam at the Brookhaven National Laboratory AGS. Results indicate that the analyzing power, A, is rising sharply with P/sub perpendicular to//sup 2/. Previous measurements of the analyzing power, A, in p + p ..-->.. p + p suggested a rise in A at large-P/sub perpendicular to//sup 2/, but the statistical uncertainty in the highest point at P/sub perpendicular to//sup 2/ = 5.95 (GeV/c)/sup 2/ made it impossible to determine the magnitude of the increase. In an effort to clarify this situation, we made new measurements of A at P/sub perpendicular to//sup 2/ = 5.95 and 6.56 (GeV/c)/sup 2/. An unpolarized beam of typically 5 x 10/sup 10/ 28 GeV/c protons from the AGS at Brookhaven National Laboratory was incident upon the University of Michigan polarized proton target. This target contains irradiated ammonia beads cooled to 0.5/sup 0/K by a /sup 3/He-/sup 4/He evaporation refrigerator, in a 2.5 T magnetic field. The polarizing transitions are driven by a 70 GHz microwave system. The polarization of the hydrogen protons is …

Secondary emission is not likely to be suppressed in thin films. Accumulated charges leak away with two time constants. The fast time constant should be short compared to the pulse duration, and the slow time constant should be short compared to the time between pulses. The Joule heating may be prohibitive in reaching adequate charge removal. The joule heating may be reduced by films which conduct little in the direction of the electric field and much better in the perpendicular direction.

The total neutral energy spectra, E/sub TOT//sup 0/ = ..sigma../sub i/ epsilon/sub i//sup 0/, have been measured in the central region of ..cap alpha cap alpha.., dd and pp interactions at ..sqrt..s/sub NN/ = 31 GeV with an electromagnetic calorimeter covering 2..pi.. in azimuth. The data were collected in the light-ion run at the CERN ISR during August 1983. The cross section ratio of the ..cap alpha cap alpha.. to the pp interactions increases rapidly with E/TOT//sup 0/ from 7 to 10/sup 5/ in the range 1.5 < E/sub TOT//sup 0/ < 19 GeV. The data are compared with a simple model of simultaneous multiple nucleon-nucleon collisions.

Nine copper-base alloys in thirteen material conditions have been inserted into the MOTA-18 experiment for irradiation in FFTF at approx.450/sup 0/C. The alloy Ni-1.9Be is also included in this experiment, which includes both TEM disks and miniature tensile specimens.

A combination of theoretical estimates, based on a ..lambda..N potential model, and phenomenological analysis of hypernuclear data is used to determine a set of four P/sub N/s/sub ..lambda../ two-body matrix elements which characterize the spin dependence of the ..lambda..N interaction in the p shell. The central spin-spin and the ..lambda.. spin-orbit matrix elements are most strongly constrained by existing data. The spin dependence is weak in the sense that s/sub ..lambda../ doublet splittings are predicted to be of order 100 keV except for the special case of /sub ..lambda..//sup 7/Li where the central spin-spin interaction dominates and the ground-state doublet separation is likely to be about 600 keV. The results of recent (K/sup -/, ..pi../sup -/..gamma..) experiments at the Brookhaven AGS are interpreted in terms of the ..lambda..N effective interaction.